Abstract: This article focuses on using an external MOSFET switch to ensure a valid system voltage is present before applying it to the load. This simple circuit uses a reset circuit and the MOSFET to provide a protection circuit during po...

Abstract: Using a temperature switch and fan driver IC along with a remote diode temperature switch provides thermal protection and simple fan drive functions for a system. This 2-chip circuit provides fan control, over-t...

Abstract: A linear circuit measures temperature and controls the speed of a cooling fan by generating a variable supply voltage for the fan. Fan noise is becoming a larger issue as more electronic equipment enters the off...

Abstract: The following application note discusses multiple solutions for sequencing power supplies and sequencing reset outputs. It discusses the advantage and disadvantages of using a discrete solution versus a more integrated solution. ...

Abstract: The following application note discusses a circuit that switches power sources efficiently without switching noise using the MAX6326. It discusses the advantages of using this technique over a simple diode-ord method. ...

The biasing of avalanche photodiodes (APDs), piezoelectric transducers (PZTs), vacuum fluorescent displays (VFDs), and microelectromechanical systems (MEMS) require high-voltage power supplies. This app note presents three topologies (Figu...

Abstract: Monocrystalline silicon pressure sensors have come into wide use in recent years. Though manufactured with semiconductor technology, they also operate on the resistive principle. The resistance change in a monocrystalline semicon...

Abstract: This article provides an in depth analysis, procedure, and selection tables for selecting the optimum series voltage reference for voltage output DACs. It covers all of the important parameters such as: input supply voltage, refe...

Abstract: USB powered devices require a regulated supply. Unfortunately, the USB bus voltage can vary from 4V to 9V. Configuring the MAX668 boost controller into step-up/step-down topology can generate a current-limited regulated supply. ...

正確的布局和元件選擇控制電磁干擾 Abstract: Understanding the physics of voltage regulator topologies is important in designing power systems for EMI and EMC compliance. In particular, the physical principl...

Abstract: This tutorial outlines the basic construction, operation, and applications of analog switches. On-resistance, flatness, and charge-injection, each a performance-related specification, are defined. Application-specific features in...

Abstract: When using an external thermal diode to measure temperature, the accuracy of the temperature measurement depends on the characteristics of the external diode. Two critical parameters that affect measurement accuracy are ideality ...

Abstract: This note compares advantages and disadvantages of Cathode Ray Tubes, Electro-Luminescent, Flip-Dot, Incandescent Light Bulbs, Liquid Crystal, Light Emitting Diode, Organic LEDs, Polymer LEDs, Glow Discharge, Plasma Display Panel...

To prevent excessive power dissipation during output short circuit, the MAX1937/MAX1938/MAX1939 provide a latch off feature under either short circuit or under-voltage-lockout condition. Once the output is latched off either the input or t...

Abstract: An avalanche diode and current source provide a floating power supply to allow high-side current sense amplifiers to work at up to 300V. The MAX471 and MAX472 are complete bi-directional high-side current sense ...

Abstract: White light-emitting diode (WLED) drivers provide high efficiency and brightness matching for LCD backlighting in displays. To control brightness, these drivers regulate current going into LEDs that are arranged in either serial ...

Abstract: Battery operated devices often need to monitor both charge and discharge currents. A dual current-sense amplifier and differential amplifier are combined to produce a single output voltage that indicates magnitude and direction o...

光耦延長高側(cè)電流傳感...

Abstract: Watchdog timers are used to monitor and minimize code execution errors. Internal watchdog timers are subject to code execution problems, making external watchdog circuits invaluable in preventing system lockup.This docume...

鋁的焊接方法 1．鋁及鋁合金的焊接特點(diǎn)    （1）鋁在空氣中及焊接時(shí)極易氧化，生成的氧化鋁（Al2O3）熔點(diǎn)高、非常穩(wěn)定，不...